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Finding the Fourth Proportional to 70,909.56, 97,857.45 and 39,079.62

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Solution

The fourth proportional to 70,909.56, 97,857.45 and 39,079.62 is: 53,931.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,909.56 : 97,857.45 = 39,079.62 : x
  2. Step 2: Convert to fraction form
    70,909.56/97,857.45 = 39,079.62/x
  3. Step 3: Cross multiply
    70,909.56x = 97,857.45 × 39,079.62
  4. Step 4: Simplify right side
    70,909.56x = 3,824,231,960.17
  5. Step 5: Solve for x
    x = 3,824,231,960.17/70,909.56
  6. Step 6: Final answer
    x = 53,931.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.